Tamper-evident rotor top

Details Tamper-evident rotor top Tamper-evident rotor top

1991-04-23

1992-11-10

Huson, Gregory L.

Dispensing

With recorder, register, indicator, signal or exhibitor

222541, 222555, 222565, 220257, B67D 506

Patent

active

051617137

ABSTRACT:
A tamper-evident end closure for dispensers, including a hermetically sea base, a rotor having a normally occurring unrestrained non-flat shape, and a rotatable connection between the rotor and the base to hold the rotor on the base in a substantially flat condition so it can rotate. The rotatable connection is achieved by employing an annular attachment ring, formed on the rotor snap-fit into an annular groove molded into the base. The annular attachment ring is connected to the rotor by a frangible web, which will break or tear when an attempt is made to separate the rotor from the base. Because the rotor is formed with a normally occurring non-flat shape, tearing or breaking of the frangible web will allow a portion of the rotor, normally held by the attachment ring, to spring or bend toward its natural shape. This unrestrained portion provides striking evidence of the tampering attempt.

REFERENCES:
patent: 3129860 (1964-04-01), Foster
patent: 3163314 (1964-12-01), Mauser
patent: 3486665 (1969-12-01), LaCroce
patent: 4541541 (1985-09-01), Hickman et al.
patent: 4611725 (1986-09-01), Kacalieff
patent: 4792054 (1988-12-01), Weidman
patent: 4793500 (1988-12-01), Harding
patent: 4925067 (1990-05-01), Zemlo et al.
patent: 4941592 (1990-07-01), Kitterman
patent: 4957211 (1990-09-01), Ekkert et al.

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